EP3673570B1 - Système de préparation destiné à fabriquer une tige d'enroulement pour un moteur électrique, et procédé de fabrication d'une tige d'enroulement - Google Patents

Système de préparation destiné à fabriquer une tige d'enroulement pour un moteur électrique, et procédé de fabrication d'une tige d'enroulement Download PDF

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Publication number
EP3673570B1
EP3673570B1 EP18765352.2A EP18765352A EP3673570B1 EP 3673570 B1 EP3673570 B1 EP 3673570B1 EP 18765352 A EP18765352 A EP 18765352A EP 3673570 B1 EP3673570 B1 EP 3673570B1
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EP
European Patent Office
Prior art keywords
winding rod
rod blank
processing
cutting
tool
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Application number
EP18765352.2A
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German (de)
English (en)
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EP3673570A1 (fr
Inventor
Andreas Falkner
Mladen-Mateo PRIMORAC
David SCHERRER
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Miba Automation Systems GmbH
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Miba Automation Systems GmbH
Miba Automation Systems GmbH
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Publication of EP3673570A1 publication Critical patent/EP3673570A1/fr
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/04—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of windings, prior to mounting into machines
    • H02K15/0414—Windings consisting of separate elements, e.g. bars, hairpins, segments, half coils
    • H02K15/0421—Windings consisting of separate elements, e.g. bars, hairpins, segments, half coils consisting of single conductors, e.g. hairpins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D3/00—Cutting work characterised by the nature of the cut made; Apparatus therefor
    • B26D3/16—Cutting rods or tubes transversely

Definitions

  • the invention relates to a production system for producing a winding bar for an electric motor, the production system being designed for processing a winding bar blank, and a method for producing a winding bar for an electric motor.
  • winding bars which are pushed into a laminated core of an electric motor. When electrically connected to one another, several winding bars form a winding of the electric motor.
  • the winding bars are rod-shaped and are connected to one another in an electrically conductive manner at their ends in order to form the winding.
  • the individual winding bars have an enveloping insulation layer. It is known from the prior art to partially burn away this insulating layer using a laser.
  • the object of the present invention was to overcome the disadvantages of the prior art and to provide a device and a method by means of which winding bars can be produced in a short cycle time.
  • According to the invention is a production plant according to claim 1 for producing a winding bar for a
  • the advantage of the production plant according to the invention is that the processing tool for mechanical removal of the insulating layer can have a high processing speed compared to conventional methods. As a result, the cycle time when manufacturing the winding bars can be kept as short as possible.
  • the processing tool of the stripping device can have at least one processing head on which a geometrically defined cutting edge is formed.
  • the advantage here is that the insulating layer can be removed mechanically by the geometrically determined cutting edge.
  • the geometrically determined cutting edge is in this case moved relative to the winding bar blank.
  • the additional machining tools can have a similar structure to the machining tools already described.
  • the insulating layer can be removed from the entire circumference of the winding bar blank by means of the additional processing tools.
  • the further machining tools are arranged in a further stripping device which is connected upstream or downstream of the stripping device already described.
  • the base surface and the top surface are stripped in a first stripping device and the side surfaces are stripped in a further stripping device.
  • the processing head of the processing tool of the stripping device is designed in the form of a broaching tool, which has a processing direction transverse to the production direction, with at least one cutter acting in the processing direction, in particular several cutters arranged one behind the other in the processing direction.
  • a broaching tool has a structure that is as simple as possible and can separate the insulating layer from the winding bar blank by means of a linear movement in the processing direction.
  • a plurality of cutting edges arranged one behind the other can serve to remove the insulating layer in one machining process, but in several stages.
  • the individual cutting edges arranged one behind the other can have a different processing depth, so that the entire thickness to be removed is divided between the individual cutting edges.
  • the processing tool of the stripping device has a first processing head with first cutters and a second processing head with second cutters, the first cutters and the second cutters having opposite processing directions and the first processing head and the second processing head being selectively activatable are.
  • the advantage here is that, as a result of this measure, the machining tool can remove the insulating layer not only in a first machining direction, but also in a second machining direction.
  • the cycle time can be shortened further since the first processing head can be deactivated and the second processing head can be activated after the end of the processing operation in the first processing direction.
  • the processing tool can carry out a processing operation in the second, opposite processing direction immediately after the processing operation in the first processing direction.
  • the machining tool does not have to be moved back to a starting position, but can start another machining process directly after the winding bar blank has been fed forward accordingly.
  • the first processing head is coupled to a first pneumatic cylinder and the second processing head is coupled to a second pneumatic cylinder, the processing heads being displaceable in an infeed direction by means of the pneumatic cylinders and thus being selective can be activated.
  • the advantage here is that the processing heads can be moved quickly and easily in the infeed direction by means of the pneumatic cylinders, and the cycle time can be kept short as a result.
  • a locking mechanism is formed for each of the two machining heads, whereby the machining head can be held in its machining position by mechanical locking.
  • the blocking mechanism can include a wedge, for example, which can be pushed under the processing head by means of another pneumatic cylinder and can thus serve as a mechanical stop for the processing head.
  • the cutting edges it is possible for the cutting edges to be V-shaped.
  • the advantage here is that this measure transports the chip lifted from the cutting edges outwards from the center of the cutting edges during the machining process, and the effective area of the cutting edges is thus kept as free as possible of chip residues.
  • the processing tool has a hold-down rail, which is arranged in the middle of the cutting edges and has a sliding surface. It is advantageous that the blank winding bar can be held in its position by the hold-down bar during the machining process. As a result, the torque that is introduced into the winding bar blank as a result of the machining process is intercepted.
  • the stripping device has an upper tool slide for receiving an upper machining tool and a lower tool slide for receiving a lower machining tool, the two tool slides being guided transversely to the production direction by means of a linear guide.
  • an upper tool carriage and a lower tool carriage By using an upper tool carriage and a lower tool carriage, the base and the top surface of the winding bar blank can be machined simultaneously. In this way, both the base area and the top area of the winding bar blank can be stripped in just one processing step.
  • the lower tool carriage and thus the lower machining tool and the upper tool carriage and thus the upper machining tool can basically have a similar structure.
  • the processing tools can be guided or moved in the processing direction by means of the upper tool slide or by means of the lower tool slide.
  • the lower tool carriage and the upper tool carriage work in opposite directions to one another and therefore apply an opposing force to the winding bar blank.
  • the stripping device has a drive motor, which is used to drive the upper tool carriage and the lower tool carriage, the upper tool carriage having an upper toothed rack and the lower tool carriage having a lower toothed rack, and both toothed racks being in engagement with a gear wheel , which is rotatably coupled to the drive motor, the two tool carriages being coupled to the gear wheel in such a way that when the gear wheel rotates, the two tool carriages are moved in opposite directions to one another.
  • a drive motor which is used to drive the upper tool carriage and the lower tool carriage, the upper tool carriage having an upper toothed rack and the lower tool carriage having a lower toothed rack, and both toothed racks being in engagement with a gear wheel , which is rotatably coupled to the drive motor, the two tool carriages being coupled to the gear wheel in such a way that when the gear wheel rotates, the two tool carriages are moved in opposite directions to one another.
  • the two racks and thus also the two tool slides coupled to the racks are moved in opposite directions.
  • the opposite movement of the two tool slides has the advantage that the machining tool of the lower tool slide can act in a first machining direction and at the same time the machining tool of the upper tool slide can act in a second machining direction, as a result of which the forces introduced into the winding bar blank by the machining tools act in opposite directions .
  • the forces perpendicular to the winding bar blank are thus canceled out and only a small torque is introduced into the winding bar blank, which is caused by the distance between the cutting edges of the upper tool carriage and the cutting edges of the lower tool carriage.
  • the drive motor is coupled to an adjusting spindle which has two opposite slopes, the upper one Tool carriage is coupled to a spindle nut, which engages in the area of the first pitch and the lower tool carriage is coupled to a spindle nut, which engages in the area of the second pitch.
  • the drive motor is coupled to a toothed belt, the upper tool carriage being coupled to a first section of the toothed belt and the lower tool carriage being coupled to a second, reverse section of the toothed belt.
  • the drive motor is formed by an electric motor, in particular by a servo motor.
  • a servo motor has the advantage that the machining tools can be moved quickly and easily and can apply high forces and the end positions can still be approached with great accuracy.
  • a gear is arranged between the drive motor and the gear wheel.
  • the gear is an angular gear.
  • the toothed racks or the gear wheel have helical gearing.
  • the play in the machining direction of the racks can be kept as small as possible, which means that noise emissions can be kept as low as possible during the alternating movement of the racks.
  • the wear on the individual teeth can be kept low through the use of helical gearing, as a result of which the gearwheel or the racks can have a long service life.
  • a cutting device is designed for cutting the winding bar blank to length, the cutting device being downstream of the stripping device in the direction of production, in particular that the cutting device has a punching tool.
  • the advantage here is that the individual winding bars can be cut to length from the winding bar blank by means of the punching tool.
  • the cutting device is used at the same time for stripping partial areas of side surfaces of the winding bar blank.
  • the punching tool is H-shaped, so that the winding bar blank can not only be severed in its longitudinal direction, but at the same time partial areas of the side surfaces of the winding bar blank can be stripped by means of the punching tool.
  • the distance between the processing tool of the stripping device and the punching tool corresponds to a multiple of a rod length, so that the processing steps of punching and stripping can be carried out at the same time.
  • This has the advantage that the period of time in which the winding bar blank has to be stopped for the stripping and punching processing operation can be kept as short as possible.
  • a feed device is formed between the stripping device and the cutting device.
  • the winding bar blank can be fed to the stripping device of the punching device in a clocked manner by means of the feed device.
  • the feed device has two clamping bands located opposite one another, between which the winding bar blank is guided or clamped. The two clamping bands can each be guided around deflection rollers.
  • a measuring roller arrangement is formed between the stripping device and the cutting device.
  • the measuring roller arrangement can be used to determine the actual feed rate of the blank winding bar in the direction of production and thus improve the accuracy of the cutting to length of the blank winding bar.
  • the measuring roller arrangement has two rollers lying opposite one another, with a first roller being able to act as a counter-holding roller and the second roller being able to act as a measuring roller.
  • the measuring roller has a rubberized surface.
  • a straightening roller arrangement is designed for aligning the winding bar blank, the straightening roller arrangement being seen in the direction of production upstream of the stripping device.
  • the advantage here is that the winding bar blank can be aligned by the straightening roller arrangement before it is introduced into the stripping device. In this way, any deformations of the winding bar blank can be straightened out in the straightening roller arrangement.
  • a buffer section is formed for the winding bar blank, with the buffer section being connected upstream of the stripping device, as seen in the direction of production.
  • the stripping device and/or the cutting device is arranged on a linear guide, by means of which the stripping device and/or the cutting device can be displaced in an adjustment direction parallel to the production direction.
  • the distance between the stripping device and the cutting device can be varied, as a result of which the joint clocking of the stripping device and the cutting device can be maintained during the production of winding bars of different lengths.
  • a rolling installation is formed, by means of which the cross-sectional shape of the winding bar blank can be changed.
  • the cross-sectional shape of the winding bar blank is changed together with the insulation. For example, it is possible to change the cross-section from round to rectangular, from round to square, from square to rectangular, from rectangular to square.
  • an embossing device is formed, by means of which the cross section of the winding bar blank can be changed locally in an area that has already been stripped of insulation.
  • the embossing device is arranged downstream of the stripping device in the production direction and introduces a depression in the cross section of the winding bar blank.
  • the advantage of the method according to the invention is that the machining tool for mechanical removal of the insulating layer can have a high machining speed compared to conventional methods. As a result, the cycle time when manufacturing the winding bars can be kept as short as possible.
  • the partially stripped winding bar blank is fed to the cutting device in a clocked manner by means of a feed device, with the cutting process and the stripping process being carried out at the same time. This can shorten the processing time.
  • the cutting device is used at the same time for stripping partial areas of side surfaces of the winding bar blank.
  • the winding bar blank it is possible for the winding bar blank to be fed continuously to the production plant by means of a feed device and temporarily stored in a buffer section, in particular in a material loop, so that the winding bar blank can be processed in cycles in the stripping device.
  • rotary tools in particular rotary punches, can be used for stripping and/or cutting the winding rods to length.
  • the winding bar blank is moved continuously in the production direction during the removal of a partial area of the insulating layer and the stripping device is moved synchronized with the winding bar blank in the production direction during the stripping process.
  • the winding bar blank is moved continuously in the production direction during the cutting to length of the winding bar blank and the cutting device is moved synchronized with the winding bar blank in the production direction during the cutting process.
  • the stripping device or the cutting device must be slidably arranged on the production plant.
  • the embodiment variant described here has the advantage that the winding bar blank can be advanced continuously.
  • a winding bar is a bar that has a conductive material at its core surrounded by a layer of insulation.
  • the winding bar has a substantially rectangular or square cross-section, with a top surface and a base surface being formed on two opposite side edges and side surfaces being formed on the two remaining side edges. Provision is preferably made for the core of the winding bar to be formed from a copper material.
  • a winding bar blank has a conductive material in its core, which is surrounded by an insulating layer.
  • the winding bar blank has a multiple length of a winding bar.
  • the winding bar blank is provided on large rolls with material lengths tens of meters, or that the winding bar blank is continuously manufactured directly at the production plant.
  • the machining direction of the first cutting edge and the machining direction of the second cutting edge are arranged in opposite directions to one another.
  • winding bar 1 shows a perspective view of a winding bar 1, which is used to produce a winding in an electric motor.
  • the use of the winding bar 1 in an electric motor is in DE 10 2015 217 922 A1 described.
  • the winding bar 1 has a bar length 2, which can be chosen differently depending on the size of the electric motor.
  • winding bars 1 have different bar lengths 2 for one and the same electric motor and therefore different bar lengths 2 must also be manufactured during the manufacturing process of the winding bars 1 .
  • the winding bar 1 has a rectangular cross section.
  • a base surface 3 and a top surface 4 are formed, which are arranged opposite one another.
  • two side surfaces 5 are formed, which are also arranged opposite one another.
  • the winding bar 1 has a bar thickness 6, which is determined by the distance between the base area 3 and the top area 4 to one another.
  • a bar width 7 of the winding bar 1 is defined by the distance between the two side faces 5 to one another.
  • the winding bar 1 has a core 8 which is surrounded by an insulating layer 9 .
  • the core 8 is made of an electrically conductive material such as copper.
  • the insulating layer 9 is applied directly to the core 8 in a dipping process, for example, and surrounds it with a constant wall thickness.
  • the insulating layer 9 is partially removed at the two longitudinal ends 10 of the winding bar 1, so that the core 8 of the winding bar 1 lies on the surface.
  • FIG. 3 a possible structure of an exemplary embodiment of a production plant 11 for producing a winding bar 1 from a winding bar blank 12 is shown in a schematic representation.
  • Figure 3a shows here a schematic outline of the production plant 11 and
  • Figure 3b a schematic floor plan of the production plant 11.
  • the winding bar blank 12 also has the core 8 and the insulating layer 9 , the winding bar blank 12 extending over several bar lengths 2 of the winding bar 1 .
  • the winding bar blank 12 has a length of up to several thousand bar lengths 2 and is wound up on a raw material roll.
  • winding bar blank 12 is produced directly in an upstream production plant and thus has an endless length.
  • the feed device 13 can have a pinch roller arrangement.
  • the feed device 13 is followed by a buffer section 14 in which the winding bar blank 12 can form a material loop 15 .
  • the winding bar blank 12 can be fed continuously in the feed device 13 and further processed in a clocked manner in the rest of the production plant 11 .
  • the buffer section 14 can be followed by a straightening roller arrangement 16 in which the winding bar blank 12 is straightened.
  • the straightening roller arrangement 16 can have a plurality of height straightening rollers 17 lying opposite one another, which each act on the base area 3 or on the top area 4 of the winding bar blank 12 .
  • the straightening roller arrangement 16 can have a plurality of width straightening rollers 18 lying opposite one another, which act on the side faces 5 of the winding bar blank 12 .
  • the straightening roller arrangement 16 can be followed by a stripping device 19 which serves to partially remove the insulating layer 9 on the base surface 3 and the top surface 4 of the winding bar blank 12 .
  • a stripping device 19 which serves to partially remove the insulating layer 9 on the base surface 3 and the top surface 4 of the winding bar blank 12 .
  • the production direction 20 is parallel to the longitudinal extent of the winding bar blank 12.
  • a cleaning device 21 Downstream of the stripping device 19 , a cleaning device 21 can be provided, which is used to remove contaminants in the stripped region of the winding bar blank 12 .
  • the cleaning device 21 can have two brush rollers 22 lying opposite one another, which act on the base surface 3 or on the top surface 4 of the winding bar blank 12 .
  • the brush rollers 22 can rotate continuously, with the coil bar blank 12 being pulled through between the brush rollers 22 .
  • a feed device 23 can be provided, which is used for the clocked withdrawal of the winding bar blank 12 from the stripping device 19 .
  • the feed device 23 can have a first clamping band 24 and a second clamping band 25 which are arranged opposite one another and act on the base area 3 or on the top area 4 of the winding bar blank 12 .
  • the two clamping bands 24, 25 can each be held in position by deflection rollers 26, with individual deflection rollers 26 being able to serve as drive rollers at the same time.
  • the two clamping straps 24, 25 are formed from a rubber material or have a rubberized surface, so that good static friction between the winding bar blank 12 and the clamping straps 24, 25 can be achieved.
  • a measuring roller arrangement 27 can be formed, which is used to verify the actual amount of the position change of the winding bar blank 12 during the feed.
  • the measuring roller arrangement 27 can have a measuring roller 28 and a counter-holding roller 29 .
  • a cutting device 30 can be formed, which is used for cutting the winding bar blank 12 to length into individual winding bars 11 .
  • the cutting device 30 can in particular have a punching tool 31, by means of which the actual cutting process can be carried out.
  • the cleaning device 21 , the feed device 23 and the measuring roller arrangement 27 are arranged between the stripping device 19 and the cutting device 30 .
  • the exact position of these individual devices or their sequence in the direction of production 20 can vary.
  • the stripping device 19 is arranged on a linear guide 32 by means of which the stripping device 19 can be displaced in an adjustment direction 33 parallel to the production direction 20 .
  • a distance 34 between the stripping device 19 and the cutting device 30 can be varied.
  • winding rods 1 with different rod lengths 2 can be manufactured in the production plant, it always being ensured by varying the distance 34 that the process steps of stripping and cutting to length can be carried out at the same time.
  • stripping device 19 is shown in a perspective view. For better clarity are in the 4 some Parts of the stripping device 19 are not shown and in FIG figure 5 other parts are hidden. The further detailed description of the stripping device 19 is based on an overview of the Figures 3 , 4 and 5 .
  • the linear guide 32 for adjusting the stripping device 19 in the adjustment direction 33 has at least two guide rails 35 which are coupled to the base. Furthermore, at least two slides 36 are provided per guide rail 35, on which a machine frame of the stripping device 19 is arranged.
  • the machine frame is in the 4 not shown. However, it is clear to the person skilled in the art that the machine frame is used to hold or connect the individual components and can be designed, for example, as a bent sheet metal part, as a welded part or as a cast part.
  • an adjusting spindle 37 is formed, which is coupled to an adjusting motor 39 and serves to position the stripping device 19 in the adjustment direction 33 .
  • an upper tool carriage 39 and a lower tool carriage 40 are formed, on each of which a machining tool 41 for stripping the winding bar blank 12 is arranged.
  • the processing tool 41 of the upper tool carriage 39 is used to strip the cover surface 4 and the processing tool 41 of the lower tool carriage 40 is used to strip the base surface 3 of the winding bar blank 12.
  • the tool slides 39, 40 each have a linear guide 42, by means of which they can be adjusted transversely to the feed direction 23.
  • the linear guide 42 can each have a guide rail 43 which is fastened to the machine frame (not shown) and a carriage 44 which is guided on the guide rail 43 and on which the machining tool 41 is accommodated.
  • the upper tool carriage 39 is coupled to an upper toothed rack 45 and that the lower tool carriage 40 is coupled to a lower toothed rack 46 .
  • the two racks 45, 46 are used to position the machining tool 41.
  • a gear 47 is provided, which is coupled to the upper rack 45 and the lower rack 46.
  • the gear 47 is driven by a drive motor 48, which in the 4 is shown only schematically. How out 4 as can be seen, it can be provided that the drive motor 48 is coupled to a transmission 49 on which the gear wheel 47 is arranged.
  • FIG. 6 shows a sectional representation of the machining tool 41 according to the section line VI-VI figure 5 . In 6 only the machining tool 41 of the lower tool slide 40 is shown.
  • FIG. 7 shows a plan view of the machining tool 41 of the lower tool carriage 40, the machining tool 41 of the upper tool carriage 39 being indicated in broken lines.
  • the exact function of the editing tool 41 is based on a synopsis of the figure 5 , 6 and 7 described.
  • the machining tool 41 has a first machining head 50 with a first cutting edge 51 and a second machining head 52 with a second cutting edge 53 .
  • the first cutting edge 51 acts in a first machining direction 54 and the second cutting edge 53 acts in a second machining direction 55. How particularly good 7 As can be seen, it can be provided that the cutting edges 51, 53 are each V-shaped.
  • the two machining heads 50, 51 of the machining tool 41 can each be adjusted in the infeed direction 56. As a result, either the first processing head 50 or the second Processing head 52 can be activated.
  • the infeed direction 56 is orthogonal to the production direction 20 and to the machining direction 54, 55 of the cutting edges 51, 53.
  • a hold-down rail 57 which has a sliding surface 58 can be positioned in the center of the cutting edges 51 , 53 .
  • the processing head 50, 52 is activated when it is pushed up so far in the infeed direction 56 that the cutting edges 51, 53 protrude beyond the sliding surface 58 of the hold-down rail 57.
  • the first processing head 50 is activated and the second processing head 52 is deactivated.
  • the hold-down rail 57 is mounted in an articulated manner in its longitudinal center and is held in position at both longitudinal ends by means of a spring-loaded plunger 59 .
  • a first blocking device 62 is formed for the first processing head 50, which is used to lock the first processing head 50 in its active position.
  • a second blocking device 63 can be formed for the second machining head 52 .
  • the locking devices 62, 63 can each have a locking wedge 64 which is inserted under the processing head 50, 52.
  • the locking wedge 64 can be moved by means of a pneumatic cylinder 65.
  • guide elements 66 are provided, which are used for the lateral guidance of the winding bar blank 12 .
  • a clamping device 67 can be provided, which is used to fix the winding bar blank 12 in its position during the stripping. the Clamping device 67 can also be actuated pneumatically and can act on top surface 4 of winding bar blank 12 .
  • the winding bar blank 12 is positioned in the production direction 20 , then the winding bar blank 12 can be clamped by means of the clamping device 67 .
  • the first machining head 50 of the upper tool carriage 39 and also the first machining head 50 of the lower tool carriage 50 can be displaced in the infeed direction 56 so that they are in an active position.
  • the two second machining heads 52 of the upper tool carriage 39 and the lower tool carriage 40 are disengaged at the same time.
  • the first machining heads 50 of the two tool slides 39, 40 can then be locked by means of the locking device 62.
  • the two tool slides 39, 40 are each moved in the machining direction 54 of the first cutting edge and are thus drawn over the winding bar blank 12 in opposite directions.
  • the upper tool slide 39 processes the top surface 4 of the winding bar blank 12 and the lower tool slide 40 the base surface 3 of the winding bar blank 12.
  • the insulating layer 9 on the winding bar blank 12 are partially removed.
  • the insulating layer 9 is removed in the area of the cutting edge 51 and in the area of the hold-down rail 57 a web remains on which the insulating layer 9 has not been removed.
  • the winding bar blank 12 is additionally held in its position by the hold-down rails 57 .
  • the second machining heads 52 can then be activated on both tool slides 39, 40 and the first machining heads 50 can be deactivated. Parallel to this, the winding bar blank 12 can be shifted in the production direction 20 according to the required bar length 2 of the winding bar 1 to be produced. Here, of course, the clamping device 67 must be released accordingly and closed again. Afterward the two tool slides 39, 40 can be moved back to their starting position in the processing direction 55 of the second cutting edge 53, with a stripping process on the winding bar blank 12 also being carried out here. The process described can now be restarted.
  • FIG 8 shows a schematic representation of another possible embodiment of a tool slide 39, 40.
  • provision can be made for the two machining heads 50, 52 to be coupled to one another by means of a lever 68 which is mounted on a pivot point 69 arranged centrally between the two machining heads 50, 52.
  • a single pneumatic cylinder 70 needs to be provided for the simultaneous adjustment of both processing heads 50, 52 at the same time.
  • a locking device can also be provided here, which is used to lock the processing heads 50, 52.
  • FIG. 9 shows a schematic representation of a possible embodiment of a cutting device 30.
  • the cutting device 30 has a punching tool.
  • the stamping tool can include a die 71 on which the winding bar blank 12 rests.
  • the die 71 has a recess 72, the shape of which is adapted to a punch (not shown).
  • the shape of the recess 72 can, as from 9 be chosen H-shaped, so that the winding bar blank 12 can be divided into individual winding bars 1. At the same time, the side surfaces 5 can be stripped at the longitudinal ends 10 of the winding bar blank 12 .
  • the recess 72 has two legs 73 lying parallel to one another, which are connected to one another by a web 74 .
  • the legs 73 are arranged at a distance 75 from one another.
  • the distance 75 is smaller than the bar width 7. As a result, the side surfaces 5 are stripped at the longitudinal end 10 of the winding bar 1 during the punching process at the same time.
  • the punch is surrounded by a holding-down device which is coupled in movement to the punch.
  • the hold-down device is supported on the stamp by means of a spring mechanism.
  • the cutting device 30 is designed in the form of shears, with a movable blade 76 being designed, by means of which the individual winding bars 1 can be severed.
  • 11 12 shows a schematic representation of a possible exemplary embodiment of an embossing device 77 for introducing a deformation, in particular a depression, into the winding bar blank 12.
  • the embossing device 77 can include an embossing die 78, which is designed to introduce the deformation into the winding bar blank 12.
  • the deformation can be introduced into the coil bar blank 12 precisely in an area in which the coil bar blank 12 is then subdivided in order to obtain a single coil bar 1 . This separation is represented by a separating line 79 .
  • a winding bar 1 can thus be produced which has a notch at its longitudinal end 10 .

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Claims (16)

  1. Installation de fabrication (11) pour la fabrication d'une tige d'enroulement (1) d'un moteur électrique, dans laquelle l'installation de fabrication (11) est conçue pour l'usinage d'une ébauche de tige d'enroulement (12), qui comprend un noyau (8) constitué d'un matériau électroconducteur et une couche isolante (9) entourant le noyau (8), dans laquelle l'ébauche de tige d'enroulement (12) présente une section transversale rectangulaire ou carrée avec une surface de base (3) et une surface de couverture (4) qui sont disposées en face l'une de l'autre, cette installation de fabrication (11) comprenant :
    - un dispositif de dénudage (19) qui est conçu pour l'élimination partielle de la couche d'isolation (9) sur la surface de base (3) et de la surface de couverture (4) de l'ébauche de tige d'enroulement (12),
    dans laquelle l'ébauche de tige d'enroulement (12) peut être guidée dans la direction de la production (20) à travers le dispositif de dénudage (19) ;
    dans laquelle le dispositif de dénudage (19) comprend un outil d'usinage (41) pour l'enlèvement mécanique de la couche isolante (9) de l'ébauche de tige d'enroulement (12),
    dans laquelle un dispositif de mise à longueur (30) est conçu pour la mise à longueur de l'ébauche de tige d'enroulement (12), dans laquelle le dispositif de mise à longueur (30) est disposée en aval du dispositif de dénudage (19) dans la direction de la production (20),
    caractérisée en ce que
    le dispositif de mise à longueur (30) permet également le dénudage de parties de surfaces latérales (5) de l'ébauche de tige d'enroulement (12).
  2. Installation de fabrication selon la revendication 1, caractérisée en ce que la tête d'usinage (50, 52) de l'outil d'usinage (41) du dispositif de dénudage (19) se présente sous la forme d'un outil de brochage qui présente une direction d'usinage (54, 55) transversale par rapport à la direction de production (20), dans laquelle au moins une arête (51, 53), plus particulièrement plusieurs arêtes (51, 53), disposées les unes derrière les autres dans la direction d'usinage (54, 55), sont prévues, avec une action dans la direction d'usinage (54, 55).
  3. Installation de fabrication selon la revendication 2, caractérisée en ce que l'outil d'usinage (41) du dispositif de dénudage (19) comprend une première tête d'usinage (50) avec des premières arêtes (51) et une deuxième tête d'usinage (52) avec des deuxièmes arêtes (53), dans laquelle les premières arêtes (51) et les deuxièmes arêtes (53) présente des directions d'usinage opposées (54, 55) et dans laquelle la première tête d'usinage (50) et la deuxième tête d'usinage (52) peuvent être activées de manière sélective.
  4. Installation de fabrication selon la revendication 3, caractérisée en ce que la première tête d'usinage (50) est couplée avec un premier vérin pneumatique (60) et la deuxième tête d'usinage (52) est couplée avec un deuxième vérin pneumatique (61), dans laquelle les têtes d'usinage (50, 52) peuvent coulisser grâce aux vérins pneumatiques (60, 61) dans une direction d'approche (56) et peuvent être activées de manière sélective grâce à ceux-ci.
  5. Installation de fabrication selon l'une des revendications 1 à 4, caractérisée en ce que les arêtes (51, 53) présentent une forme de V.
  6. Installation de fabrication selon l'une des revendications 1 à 4, caractérisée en ce que l'outil d'usinage (41) comprend un rail de serre-flan (57) qui est disposé au centre entre les arêtes (51, 53) et présente une surface de glissement (58).
  7. Installation de fabrication selon l'une des revendications précédentes, caractérisée en ce que le dispositif de dénudage (19) comprend une chariot d'outil supérieur (39) pour le logement d'un outil d'usinage supérieur (41) et un chariot d'outil inférieur (40) pour le logement d'un outil d'usinage inférieur (41), dans laquelle les deux chariots d'outils (39, 40) sont guidés au moyen d'un guidage linéaire (42) transversalement par rapport à la direction de production (20).
  8. Installation de fabrication selon la revendication 7, caractérisée en ce que le dispositif de dénudage (19) comprend un moteur d'entraînement (48), qui permet l'entraînement du chariot d'outil supérieur (39) et du chariot d'outil inférieur (40), dans laquelle le chariot d'outil supérieur (39) comprend une crémaillère supérieure (45) et le chariot d'outil inférieur (40) comprend une crémaillère inférieure (46) et dans laquelle les deux crémaillères (45, 46) s'engrènent avec une roue dentée (47) qui est couplée en rotation avec le moteur d'entraînement (48), dans laquelle les deux chariots d'outils (39, 40) sont couplés avec la roue dentée (47) de façon à ce que, lors de la rotation de la roue dentée (47), les deux chariots d'outils (39, 40) soient déplacés dans des sens opposés entre eux.
  9. Installation de fabrication selon l'une des revendications précédentes, caractérisée en ce qu'une section tampon (14) est formée pour l'ébauche de tige d'enroulement (12), dans laquelle, vue dans la direction de la production (20), la section tampon (14) est disposée en amont du dispositif de dénudage (19).
  10. Installation de fabrication selon l'une des revendications précédentes, caractérisée en ce que le dispositif de dénudage (19) et/ou le dispositif de mise à longueur (30) est disposé sur un guidage linéaire (32), au moyen duquel le dispositif de dénudage (19) et/ou le dispositif de mise à longueur (30) peut coulisser dans une direction de déplacement (33) parallèle à la direction de la production (20).
  11. Procédé de fabrication d'une tige d'enroulement (1) pour un moteur électrique à l'aide d'une installation de fabrication (11) selon l'une des revendications précédentes, comprenant les étapes suivantes :
    - mise à disposition d'une ébauche de tige d'enroulement (12) avec un noyau (8) constitué d'un matériau électroconducteur et une couche isolante (9) entourant le noyau (8), dans laquelle l'ébauche de tige d'enroulement (12) présente une section transversale rectangulaire ou carrée avec une surface de base (3) et une surface de couverture (4), qui sont disposées en face l'une de l'autre ;
    - avance de l'ébauche de tige d'enroulement (12) vers un dispositif de dénudage (19) dans la direction de production (20) ;
    - élimination d'une partie de la couche isolante (9) sur la surface de base (3) et de la surface de couverture (4) de l'ébauche de tige d'enroulement (12) au moyen du dispositif de dénudage (19), dans laquelle la couche isolante (9) est enlevée par un usinage mécanique de l'ébauche de tige d'enroulement (12) ; dans laquelle, après l'élimination d'une partie de la couche isolante (9), les étapes de production
    - avance de l'ébauche de tige d'enroulement (12) vers un dispositif de mise à longueur (30) ;
    - mise à longueur de l'ébauche de tige d'enroulement (12) au niveau du dispositif de mise à longueur (30) et donc fabrication de tiges d'enroulement (1) ;
    sont exécutées, caractérisé en ce que
    le dispositif de mise à longueur (30) permet également le dénudage de parties des surfaces latérales (5) de l'ébauche de tige d'enroulement (12).
  12. Procédé selon la revendication 11, caractérisé en ce que l'ébauche de tige d'enroulement (12) partiellement dénudée est avancée, au moyen d'un dispositif d'avance (23), de manière cadencée, vers le dispositif de mise à longueur (30), dans laquelle le processus de mise à longueur et le processus de dénudage sont exécutés simultanément.
  13. Procédé selon la revendication 11 ou 12, caractérisé en ce que, pour la fabrication de tiges d'enroulement (1) avec différentes longueurs de tiges (2), le dispositif de dénudage (19) est déplacé dans la direction de production (20) par rapport au dispositif de mise à longueur (30).
  14. Procédé selon l'une des revendications 11 à 13, caractérisé en ce que l'ébauche de tige d'enroulement (12) est introduite, au moyen d'un dispositif d'alimentation (13), de manière continue, dans l'installation de fabrication (11) et entreposée dans une section tampon (14), plus particulièrement dans une boucle de matériau (15), de façon à ce que l'ébauche de tige d'enroulement (12) puisse être usinée de manière cadencée dans le dispositif de dénudage (19).
  15. Procédé selon l'une des revendications 11 à 14, caractérisé en ce que l'ébauche de tige d'enroulement (12) est déplacée, pendant l'élimination d'une partie de la couche isolante (9), de manière continue dans la direction de production (20) et le dispositif de dénudage (19) est déplacée, pendant le processus de dénudage, de manière synchrone avec l'ébauche de tige d'enroulement (12) dans la direction de production (20).
  16. Procédé selon l'une des revendications 11 à 15, caractérisé en ce que l'ébauche de tige d'enroulement (12) est déplacée, pendant la mise à longueur de l'ébauche de tige d'enroulement (12), de manière continue dans la direction de production (20) et le dispositif de mise à longueur (30) est déplacé, pendant le processus de mise à longueur, de manière synchrone avec l'ébauche de tige d'enroulement (12) dans la direction de production (20).
EP18765352.2A 2017-08-23 2018-08-03 Système de préparation destiné à fabriquer une tige d'enroulement pour un moteur électrique, et procédé de fabrication d'une tige d'enroulement Active EP3673570B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT507042017A AT520364B1 (de) 2017-08-23 2017-08-23 Fertigungsanlage zum Herstellen eines Wicklungsstabes für einen Elektromotor, sowie Verfahren zum Herstellen des Wicklungsstabes
PCT/AT2018/060174 WO2019036736A1 (fr) 2017-08-23 2018-08-03 Système de préparation destiné à fabriquer une tige d'enroulement pour un moteur électrique, et procédé de fabrication d'une tige d'enroulement

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Publication Number Publication Date
EP3673570A1 EP3673570A1 (fr) 2020-07-01
EP3673570B1 true EP3673570B1 (fr) 2022-12-21

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EP (1) EP3673570B1 (fr)
CN (1) CN111357177A (fr)
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DE102020112892A1 (de) * 2020-05-13 2021-11-18 Gehring Technologies Gmbh + Co. Kg Vorrichtung und Verfahren zum Abisolieren von Leiterstücken
DE102022202244B3 (de) 2022-03-04 2023-09-14 Thyssenkrupp Ag Vorrichtung und Verfahren zum Abisolieren von mit einer elektrischen Isolierung versehenem und zur Herstellung von Hairpins gefördertem Endlosdraht
JP2024008338A (ja) * 2022-07-08 2024-01-19 トヨタ自動車株式会社 線状材料製造装置

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JP5681248B1 (ja) * 2013-08-26 2015-03-04 本田技研工業株式会社 コイルセグメント製造装置及びコイルセグメント製造方法
JP6252865B2 (ja) * 2014-08-20 2017-12-27 住友電装株式会社 コイル製造方法、コイル製造装置
US9973064B2 (en) * 2014-11-14 2018-05-15 MAGNETI MARELLI S.p.A. Method and station for the construction of a stator winding with rigid bars for a rotary electrical machine
JP6324541B2 (ja) * 2014-12-26 2018-05-16 日立オートモティブシステムズ株式会社 コイル成形装置及びコイル成形方法

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AT520364A1 (de) 2019-03-15
WO2019036736A1 (fr) 2019-02-28
EP3673570A1 (fr) 2020-07-01
AT520364B1 (de) 2019-11-15
CN111357177A (zh) 2020-06-30

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